QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

7 km NNW of Cromwell, Oklahoma

· 3.3 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Okfuskee County 15 kmSeminole County 29 kmHughes County 44 kmPottawatomie County 48 kmLincoln County 49 kmOkmulgee County 54 kmCreek County 57 kmMcIntosh County 73 kmPontotoc County 78 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.6 (ml)
Depth
3.3 km below the surface
Felt
no reports yet
Nearest
Okfuskee County, 15 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2837 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 35.4020, -96.4787. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Okfuskee County, OK 15 km (10 mi) WSW of here earthquakes near Okfuskee County
Seminole County, OK 29 km (18 mi) NNE of here earthquakes near Seminole County
Hughes County, OK 44 km (27 mi) NNW of here earthquakes near Hughes County
Pottawatomie County, OK 48 km (30 mi) ENE of here earthquakes near Pottawatomie County
Lincoln County, OK 49 km (31 mi) SE of here earthquakes near Lincoln County
Okmulgee County, OK 54 km (33 mi) WSW of here earthquakes near Okmulgee County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

50 earthquakes have been recorded within 50 km since this one.

  1. 1.8 5 km N of Stroud, Oklahoma
  2. 2.0 5 km N of Stroud, Oklahoma
  3. 1.6 10 km ESE of Stroud, Oklahoma
  4. 2.4 4 km WSW of Cromwell, Oklahoma
  5. 1.8 8 km NW of Prague, Oklahoma
  6. 2.2 5 km N of Stroud, Oklahoma
  7. 3.0 5 km N of Stroud, Oklahoma
  8. 2.4 5 km N of Stroud, Oklahoma
  9. 2.1 5 km WNW of Horntown, Oklahoma
  10. 2.4 6 km WNW of Horntown, Oklahoma
  11. 3.0 6 km SSE of Yeager, Oklahoma
  12. 2.1 5 km WSW of Horntown, Oklahoma
  13. 2.5 8 km S of Shamrock, Oklahoma
  14. 2.2 5 km S of Dustin, Oklahoma
  15. 2.8 7 km NW of Wetumka, Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.